package com.mamingchao.basic.ExtendVsInterface.super_class;

/**
 * 单继承
 * Created by mamingchao on 2020/12/31.
 */
//public class SingerSongWriter extends SongWriter,Singer {
//    @Override
//    public Song compose() {
//        return null;
//    }
//
//    @Override
//    public AudioClip sing(Song song) {
//        return null;
//    }
//}
